Tektronix DPO4000 Instrukcja Użytkownika Pobierz pdf (Strona 221)

Commands Listed in Alphabetical Order

Syntax

MEASUrement:I

MMed:TYPe

{AMPlitude|AREa|BURst|CARe a|CMEan|CRMs|DELay|FALL|FREQuency

|NPULSECount

|NWIdth|PEDGECount|PDUty

|PERIod|PHAse|PK2Pk|POVers hoot|PPULSECount|PWIdth|RISe|RMS}

MEASUrement:IMMed:TYPe?

Arguments

AMPlitude measures the amplitude of the selected waveform. In other w ords, it

measures the high value less the low value measured over the entire wa veform or

gated region. This measurement is applicable only to the analog channels.

Amplitude = High - Low

AREa measures the voltage over time. The area is over the entire waveform or

gated region and is measured in volt-seconds. The area measured above the

ground is positive, while the area below ground is negative. This measurement is

applicable only to the analog channels.

BURst measures the duration of a burst. The measurement is made over the entire

waveform or gated region.

CARea (cycle area) measures the voltage over time. In other words, it measures, in

volt-seconds, the area over the ﬁrst cycle in the waveform or the ﬁrst cycle in the

gated region. The area measured above the common reference p oint is positive,

while the area below the common reference point is negative. This measurement

is applicable only to the analog channels.

CMEan (cycle mean) measures the arithmetic mean over the ﬁrst cycle in the

waveform or the ﬁrst cycle in the gated region. This measurement is applicable

only to the analog channels.

CRMs (cycle rms) measures the true Root Mean Square voltage over the ﬁrst

cycle in the waveform or the ﬁrst cycle in the gated region. This measurement is

applicable only to the analog channels.

DELay measures the time between the middle reference (default = 50%) amplitude

point of the source waveform and the destination waveform.

FALL measures the time taken for the falling edge of the ﬁ rst pulse in the

waveform or gated region to fall from a high reference value (default is 90%) to

a low reference value (default is 10%). This measurement is applicable only

to the analog channels.

FREQuency measures the ﬁrst c ycle in the waveform or gated region. Frequency

is the reciprocal of the period and ismeasuredinhertz(Hz),where1Hz=1

cycle per second.

HIGH measures the High reference (100% level, sometimes called Topline) of a

waveform. This measurement is applicable only to the analog channels.

LOW measures the Low reference (0% level, sometimes called Baseline) of a

waveform. This measurement is applicable only to the analog channels.

MSO4000 and DPO4000 Series Programmer Manual 2-211

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